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  2. Fish gill - Wikipedia

    en.wikipedia.org/wiki/Fish_gill

    Fish gills are organs that allow fish to breathe underwater. Most fish exchange gases like oxygen and carbon dioxide using gills that are protected under gill covers (operculum) on both sides of the pharynx (throat). Gills are tissues that are like short threads, protein structures called filaments. These filaments have many functions including ...

  3. Aquatic respiration - Wikipedia

    en.wikipedia.org/wiki/Aquatic_respiration

    Sea slugs respire through a gill (or ctenidium). Aquatic respiration is the process whereby an aquatic organism exchanges respiratory gases with water, obtaining oxygen from oxygen dissolved in water and excreting carbon dioxide and some other metabolic waste products into the water.

  4. Gill - Wikipedia

    en.wikipedia.org/wiki/Gill

    Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians. Semiterrestrial marine animals such as crabs and mudskippers have gill chambers in which they store water, enabling them to use the dissolved oxygen when they are on land.

  5. Respiratory system of gastropods - Wikipedia

    en.wikipedia.org/wiki/Respiratory_system_of...

    The majority of marine gastropods breathe through a single gill, supplied with oxygen by a current of water through the mantle cavity. This current is U-shaped, so that it also flushes waste products away from the anus , which is located above the animal's head, and would otherwise cause a problem with fouling.

  6. Aquatic animal - Wikipedia

    en.wikipedia.org/wiki/Aquatic_animal

    Some protists accomplish this using contractile vacuoles, while freshwater fish excrete excess water via the kidney. [4] Although most aquatic organisms have a limited ability to regulate their osmotic balance and therefore can only live within a narrow range of salinity, diadromous fish have the ability to migrate between fresh and saline ...

  7. Fish physiology - Wikipedia

    en.wikipedia.org/wiki/Fish_physiology

    Fish physiology is the scientific study of how the component parts of fish function together in the living fish. [2] It can be contrasted with fish anatomy, which is the study of the form or morphology of fishes. In practice, fish anatomy and physiology complement each other, the former dealing with the structure of a fish, its organs or ...

  8. Kate Winslet Reveals Process Behind Holding Her Breath For 7 ...

    www.aol.com/entertainment/kate-winslet-reveals...

    Kate Winslet, who held her breath underwater for 7 minutes and 14 seconds while filming "Avatar: The Way of Water," said the feat involved both physical and mental conditioning.

  9. Marine vertebrate - Wikipedia

    en.wikipedia.org/wiki/Marine_vertebrate

    Fish fall into two main groups: fish with bony internal skeletons and fish with cartilaginous internal skeletons. Fish anatomy and physiology generally includes a two-chambered heart, eyes adapted to seeing underwater, and a skin protected by scales and mucous. They typically breathe by extracting oxygen from water through gills.